How do I convert an AU file to AVI using LetsConvert?

Visit the AU to AVI converter page, upload your .au file (you can drag and drop), select AVI as the output format. Choose your preferred audio codec—PCM for lossless output or MP3 for smaller size. Click 'Convert', wait a few seconds, then download the resulting AVI file. The process works entirely in your browser and requires no software installation.

Why would I need to convert AU to AVI?

AU is a legacy audio format created by Sun Microsystems and NeXT, commonly found on older Unix workstations. Most modern media players and video editing software do not support AU directly. Converting AU to AVI wraps the audio in a widely compatible container that plays in Windows Media Player, VLC, and major editors like Adobe Premiere. This also lets you embed the audio as a soundtrack in video projects that require AVI.

What happens to audio quality and attributes during AU to AVI conversion?

The conversion preserves the original sample rate and channel configuration (mono/stereo) from the AU file. If the AU file uses mu-law compression, it is decoded into 16-bit linear PCM, which is losslessly stored in the AVI container. If the AU file is already linear PCM, the audio data is copied without any resampling or quality loss. This ensures your converted AVI maintains the exact audio fidelity of the source, like a 44.1 kHz/16-bit stereo track.

Is AU-TO-AVI free to use?

Yes, AU-TO-AVI on LetsConvert is 100% free with no registration or hidden fees required.

Are my uploaded files safe and secure?

Yes! File privacy and security are guaranteed. Basic conversions run locally in your browser. Files sent for server processing are automatically deleted within 1 hour.

Does this converter work on mobile phones and tablets?

Yes! AU-TO-AVI works seamlessly across iPhone, Android, iPad, Mac, Windows, and Linux browsers without installing any app.

Is there any software installation required?

No software or browser extension installation is needed. All conversions are performed directly online.

AU➔AVI· 100% Free & Full HD

AU-TO-AVI

AU to AVI: lossless conversion of mu-law/PCM audio to AVI container. Preserves sample rate and channels. Perfect for legacy Unix files and video editing.

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4.8 / 5.0(12 user ratings)

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Supports up to 50MB · Hardware accelerated transcode

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AU

AU File Format

Source Format

AU is a standardized digital file format supported by LetsConvert. Convert AU files securely, privately, and instantly online with zero software installation, bank-grade encryption, and automatic 60-minute file purging.

Category: Data & Media File

MIME Type: application/au

Developer: Standard Organization

Best For: Converting and managing AU files across devices and applications.

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AVI

Audio Video Interleave

Target Output

AVI is a legacy multimedia container format introduced by Microsoft in 1992. It stores synchronous audio and video data with broad compatibility across older hardware media players and Windows PCs.

Category: Digital Video

MIME Type: video/x-msvideo

Developer: Microsoft

Best For: Legacy Windows video playback and older television media player compatibility.

💡 Technical Guide & Conversion Insights

Why Convert AU to AVI?

Converting from AU (AU File Format) to AVI (Audio Video Interleave) is essential when you need enhanced compatibility, reduced file size, or specific feature support. While AU is ideal for Converting and managing AU files across devices and applications., AVI offers superior advantages for Legacy Windows video playback and older television media player compatibility.. Our secure online conversion engine ensures that all your AU file attributes, geometry, quality, and metadata are seamlessly preserved during the transformation into AVI.

● AU Key Advantages:

✓Standard format compatibility
✓Fast online conversion processing
✓Zero software install required

● AVI Key Advantages:

★Extensive legacy support across Windows software and DVD player hardware

AU vs AVI Comparison Table

Detailed technical differences and capabilities between AU File Format and Audio Video Interleave.

Feature / Attribute	AU	AVI
Primary Format Name	AU File Format	Audio Video Interleave
Primary File Category	Data & Media File	Digital Video
Standard MIME Type	application/au	video/x-msvideo
Core Developer / Standard	Standard Organization	Microsoft
Optimal Use Case	Converting and managing AU files across devices and applications.	Legacy Windows video playback and older television media player compatibility.

❓ Common Questions

Frequently Asked Questions (AU to AVI)

Everything you need to know about converting AU to AVI with LetsConvert.

To convert your AU file to AVI, upload your file by dragging and dropping it into the upload box or selecting it from your device. Adjust any optional quality or dimension settings, then click 'Convert'. Your converted AVI file will be ready for instant high-speed download within seconds.

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100% Secure & Automatic File Purging

Your AU files are encrypted with 256-bit SSL and permanently deleted from our servers within 60 minutes.

● Zero File Storage

How to Convert AU-TO-AVI

Select or drop your Au file.

Initiate the AVI conversion process.

Download your converted AVI file.

⚡ Related Video Tools

AU-TO-AVI

AU

AVI

Why Convert AU to AVI?

● AU Key Advantages:

● AVI Key Advantages:

AU vs AVI Comparison Table

Frequently Asked Questions (AU to AVI)

100% Secure & Automatic File Purging

How to Convert AU-TO-AVI

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